/// <summary>
/// 将int值转换为时间点
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static Instant FromInt(int value)
{
var segments = SplitToIntSegments(value);
if (YearMonthDayInstant.TryParseSegments(segments, out var dInst))
{
return(dInst);
}
else if (YearMonthInstant.TryParseSegments(segments, out var ymInst))
{
return(ymInst);
}
else if (YearQuarterInstant.TryParseSegments(segments, out var yqInst))
{
return(yqInst);
}
else if (YearHalfYearInstant.TryParseSegments(segments, out var yhInst))
{
return(yhInst);
}
else if (YearInstant.TryParseSegments(segments, out var yInst))
{
return(yInst);
}
else
{
throw new ArgumentException(nameof(value), $"无法将值 {value} 转换为时间点");
}
}
/// <summary>
/// 尝试从int型片段转换为实例
/// </summary>
/// <param name="segments"></param>
/// <param name="instant"></param>
/// <returns></returns>
internal static bool TryParseSegments(int[] segments, out YearMonthDayInstant instant)
{
if (segments[2] == 0)
{
instant = null;
return(false);
}
try
{
instant = new YearMonthDayInstant(segments[0], segments[1] - (int)InstantType.Jan + 1, segments[2]);
return(true);
}
catch (ArgumentOutOfRangeException)
{
instant = null;
return(false);
}
}
